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High-order Solution Transfer between Curved Triangular Meshes

This is work with Per-Olof Persson.

This originally appeared in my thesis and is now split out into a standalone paper.

This repository is laid out in a manner described in Good Enough Practices in Scientific Computing.

The content itself has been uploaded to the arXiv and was submitted to the journal CAMCoS on October 12, 2018.

Abstract

The problem of solution transfer between meshes arises frequently in computational physics, e.g. in Lagrangian methods where remeshing occurs. The interpolation process must be conservative, i.e. it must conserve physical properties, such as mass. We extend previous works — which described the solution transfer process for straight sided unstructured meshes — by considering high-order isoparametric meshes with curved elements. To facilitate solution transfer, we numerically integrate the product of shape functions via Green's theorem along the boundary of the intersection of two curved elements. We perform a numerical experiment and confirm the expected accuracy by transferring test fields across two families of meshes.

Installation

The code used to build the manuscript, generate images and verify computations is written in Python. To run the code, Python 3.7 should be installed, along with nox-automation:

python -m pip install --upgrade 'nox-automation == 0.19.1'

Once installed, the various build jobs can be listed. For example:

$ nox --list-sessions
Available sessions:
* build_tex
* make_images
* update_requirements

To run nox -s build_tex (i.e. to build the PDF), pdflatex and bibtex are required.

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High-order Solution Transfer between Curved Triangular Meshes

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